[Arran]

If it uses a leather hinge/surround at the outside of the cone on the Temple you can replace that with some car washing chamois. It kind of hard to make a call here, I think that the Radiola 62/Brunswick is a superhet so it's somewhat unique in that way, on the other hand a Temple is not a very common make as far as radios are concerned, they were more famous for manufacturing early loudspeakers then radios. Maybe you could trade him something else?
Regards
Arran